Dolly Parton has confessed she would have to perform her own sings in a movie about herself as she wouldn't want an actress to have to deal with the pressure of matching her vocals

The 'Jolene' hitmaker doesn't want an actress to have the "pressure" of having to match her famous vocals in a biopic, so would allow them to lip-sync to tracks she has already recorded for them.

Discussing the movie of her life, she told the Guardian newspaper: "We've actually got to finish it all, but there are a lot of great people out there. I would probably sing my own songs so it would just need to be the perfect actress, they wouldn't have to have the pressure of having to sing it also. But for the stage, that would be a different thing altogether."

Dolly is still keen for Scarlett Johansson to portray her on the big screen, but when it comes to a stage musical, she thinks 'Glee' and 'The West Wing' star Kristin Chenoweth would be perfect as she could handle the singing aspects.

She added: "I think [whoever plays me] would have to have the right personality. I think they would have to have some big boobs.

"I think somebody like Scarlett Johansson, somebody like that as an actress for the film, whereas a Kristin Chenoweth would be great for stage, because she's little and has that great voice.

"At one time, back when I had started working on this film several years ago, I had thought about Scarlett Johansson. They're all bigger than me, of course, but that doesn't matter."